The C Sized Ultra Power Battery from Duracell comes in a pack of 2 and offers excellent performance in high drain and frequently used devices. The ultra-power range offers 40% more power than the Plus range and incorporates an integrated powercheck tester.
for Duracell Ultra Power 2 Pack 1.5V C Size Battery
It took some while because they did not have 1 of the products I ordered in stock. However, after I contacted them they added a slightly different but still good enough product for free. Really pleased with their service, quick response as well